i just installed liquid cooling into my case and all i have hooked up are the motherboard and the pump (and the power switch ). It starts for 2 seconds and then shuts down. I havea cooling block on my nortbridge and GPU as wel if that makes any difference i dont know if maybe the computer will emergency shutdown if the northbridge block isnt centered right but i thought that would probably happen after POST and its just shutting down right away. So whats the deal? what causes a computer to shut down pre-POST that i might have overlooked?